Visualization of Thermo-Hydrodynamic Behavior in Flat-Plate Pulsating Heat Pipe with HFE-347  

作　　者：YAN Lipei ZHANG Ping XU Hui MA Wei SHENG Jiang 

机构地区：[1]School of Mechanical and Electrical Engineering,Guilin University of Electronic Technology,Guangxi 541004,China [2]Science and Technology on Space Physics Laboratory,China Academy of Launch Vehicle Technology,Beijing 100094,China

出　　处：《Journal of Thermal Science》2021年第3期926-938,共13页热科学学报（英文版）

基　　金：financial support provided by National Natural Science Foundation of China(Project No.51506033);Guangxi Natural Science Foundation(Grant No.2017JJA160108);Guangxi Colleges and Universities Program of Innovative Research Team and Outstanding Talent。

摘　　要：In this paper,the visualization of the thermo-hydrodynamic behavior in flat-plate pulsating heat pipe(FP-PHP)with HFE-347 is experimentally investigated.The FP-PHP is vertically placed with filling rate of 20%to 70%and heating power of 20 W to 140 W.A high-speed camera is used to record the two-phase flow in the FP-PHP.Four flow pattern types and four flow directions are observed.The flow directions of the two-phase flow inside the FP-PHP with medium filling rate(40%–60%)are the most complex,and the FP-PHP with high filling rate(70%)is most likely to form a directional circulating flow.At high heating power(100 W to 140 W),the flow patterns in FP-PHP with medium(40%–60%)and high filling rate(70%)are dominated by mixed flow.The wall temperature fluctuates greatly at moderate heating power(60 W to 80 W)owing to the uncertainty of the flow direction.The temperature distribution of the FP-PHP is highly affected by the heat transfer intensity of the working fluid under different flow states,so that the state of fluid flow and the thermal performance of FP-PHP can be evaluated through the infrared thermal image of the FP-PHP.

关 键 词：flat-plate pulsating heat pipe HFE-347 VISUALIZATION thermal performance infrared thermal imaging 

分 类 号：TK172.4[动力工程及工程热物理—热能工程]